C Fputs

C fputs

Created By: chatGPT

fputs is a standard C library function used to write a string to a file. Unlike fprintf, it writes a string directly without any format specifiers. This function is useful in scenarios where you simply want to output a string to a file or another output stream. Here’s a brief overview of how to use fputs:

// Include the necessary header
#include <stdio.h>

int main() {
    FILE *file;
    // Open a file in write mode
    file = fopen("example.txt", "w");
    if (file == NULL) {
        perror("Unable to open file!");
        return 1;
    }
    // String to write
    const char *str = "Hello, World! This is written using fputs!";
    // Write string to file
    fputs(str, file);
    // Close the file
    fclose(file);
    return 0;
}

In this example, the str string is written to a file named example.txt using the fputs function. It opens the file in write mode using fopen, checks if the file was opened successfully, and then proceeds to write the string. Finally, it closes the file using fclose to ensure all resources are released properly.

// The following code snippet demonstrates how to read back the written content
#include <stdio.h>

int main() {
    FILE *file;
    char buffer[255];
    // Open the file in read mode
    file = fopen("example.txt", "r");
    if (file == NULL) {
        perror("Unable to open file!");
        return 1;
    }
    // Read content from file
    fgets(buffer, sizeof(buffer), file);
    // Print content to console
    printf("Read from file: %s\n", buffer);
    // Close the file
    fclose(file);
    return 0;
}